A tennis ball is a ball designed for the sport of head tennis rackets , approximately 6.7 cm (2.7 in.) in diameter and is usually yellow, but in recreational play can be virtually any color. Tennis balls are covered in a fibrous fluffy felt which modifies their aerodynamic properties. Its colour has also sparked much debate, with many claiming that tennis balls are generally green and not yellow mainly due to the fluorescent nature of the color. People still get confused about the true colour of tennis balls.
The gift of tennis balls offered to Henry in Shakespeare's Henry V is portrayed as the final insult which re-ignites the Hundred Years' War between England and France.
When we have match'd our rackets to these wilson tennis racket balls,
We will, in France, by God's grace, play a set
John Webster, The Duchess of Malfi
We are merely the stars' tennis balls, struck and banded
Which way please them
Each year approximately 300 million balls are produced, which contributes roughly 14,700 metric tons of waste in the form of rubber that is not easily biodegradable. Historically, babolat tennis racquet ball recycling has not existed and the most common use has been to cut a hole in the ball and attach the ball to the bottom of chairs in schools, nursing homes and the like to prevent scuffing or scraping the floor.[citation needed] Balls from The Championships, Wimbledon are now recycled to provide field homes for the nationally threatened harvest mouse
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